Drinking Water Filter
Countertop Water Filter

Instantly transforms tap water into healthy, great-tasting water with no installation or permanent fixtures.

CWM water filter

Want more versatility? Our Clean Water Machine comes with a portable pitcher or countertop dispenser. Shop Now

Select color: White
Countertop Water Filter - White is rated 4.5 out of 5 by 450.
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50% OFF COUNTERTOP WATER FILTERS - limited time!
  • MSRP: 114.27
  • Sale: 57.13

Save 50% + free shipping with Water for Life $57.13

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM CDT
  • SAT–SUN: 9AM–5PM CDT

Whole Health

Ultimate Purity*

Instantly transform ordinary tap water into clean, extraordinary water.

NSF Certified Claryum® filtration technology independently tested and proven to remove over 97% of chlorine and chloramines. Also reduces:

  • Heavy metals like lead and mercury
  • Chlorine resistant cysts like giardia and cryptosporidium
  • Organic chemicals like herbicides, pesticides and VOCs
  • Pharmaceuticals like estrone and ibuprofen

For a complete list of contaminants reduced please see our Performance Data Sheet.

Aquasana filters 10 times more contaminants

Whole Health

Ultra Delicious

Claryum®'s selective filtration technology retains naturally occurring beneficial minerals in your water like Calcium, Potassium and Magnesium for healthier, more delicious water!

Whole Health

Eco Friendly

Designed with the environment in mind! Intelligent system design reduces plastic waste by minimizing disposable plastic parts.

Pure Performance

Claryum® Technology

Activated Carbon Reduces pharmaceuticals, herbicides, pesticides, VOCs and MTBE.

Catalytic Carbon Targets chlorine and chloramines.

Ion-Exchange Filters heavy metals like lead and mercury.

Absolute Sub-Micron Mechanical Filtration Captures asbestos and chlorine resistant cysts like cryptosporidium and giardia.

The result: 10x more contaminants reduced than the leading pitcher plus healthy minerals retained for purely delicious filtered water.

Pure Performance

Easily Attaches

No permanent fixtures or installation required. Simply screw on the faucet attachment for filtered water right from your tap! No more big, bulky filters cluttering up your sink space.

Pure Performance

Convenience & Value

Fewer filter replacements. More clean, great-tasting water.

One Aquasana Claryum® filter gives you 11x the capacity of the leading gravity-based pitcher at only 11¢ per gallon.

How It Works

Superior Systems

Selective Claryum® Filtration

Reduces 68 contaminants while retaining beneficial minerals for optimal hydration.

Easy to install, replace & maintain

No permanent fixtures or installation required.

certified by NSF

Full system certified to NSF/ANSI Standards 42, 53, 401 + P473.

  • 450 gallons
  • 6 month filter life
  • 1 year warranty
  • 90 day guarantee

Help & Support

Video Help

  • How to install the countertop faucet water filter
  • How to replace the AQ-4000-R countertop filters

Installing the countertop faucet system

Replacing the filters in the AQ-4000

Learn More

Read the Reviews

Rated 5 out of 5 by from What a difference! I read Erin Brockovich's posts about the unhealthy effects of clorine burnout on facebook and wondered if it every happened in my area. Then one day my question was answered. I kept smelling bleach and realized it was the water I was drinking. HORRORS! I did some research online and found Aquasana highly recommended and they had a satisfaction guarantee. It also attaches to the faucet without special equipment, which was important to me since I live in an apartment. So I bought it. They even threw in a shower filter. I was stunned. The water tastes so much better, I feel cleaner when I get out of the shower, and my hair even feels and behaves better. Wonderful product.
Date published: 2017-05-28
Rated 5 out of 5 by from Works great Easy to install This works great. I bought it because it removes chlorine and chloramine and much more. It's very convenient, and well priced. The water tastes so much better. I took a sip of water this morning that wasn't filtered and spit it out. What a difference. We have town water with a very strong chlorine odor when it's not filtered. It leaked after a couple of days. My husband tightened it and it's worked great ever since - about a month. I had been using ProPur Big a 2 1-2 gallon holding tank that had to be refilled every day and a half. The ProPur also took up much more space. With the Aquasana because it filters through the tap, I can use it for drinking, cooking without running out of filtered water. I am very happy that I bought this product.
Date published: 2017-04-21
Rated 4 out of 5 by from Great Portable Filter if You Move Alot I purchased this filter because I did not want to spend a lot of money but wanted good performance. I was planning on moving soon so I chose not to get the more permanent under counter reverse osmosis versions. This has been working out well. I don't keep it attached to my kitchen sink all the time. I only connect it every 4-5 days. Instead I use glass bottles to store my water. I have 20 of them and I wait until there empty and then fill them all up again.
Date published: 2017-02-26
Rated 5 out of 5 by from I would definitely buy these two products again and again I actually bought this for my son. He lives in a town that has well water. He would complain that his hair and skin felt dingy and dirty after he showered. I decided I was going to get him a water filter and a shower filter. He absolutely loves both of them. What a difference it makes, his skin and hair feel so good now, he let his roommate shower in his bathroom he loved it too and will probably be getting the shower filter. Thank you for making such wonderful products.
Date published: 2017-03-20
Rated 4 out of 5 by from Works well but replacement filters are expensive! I use this product everyday to get my drinking water from. Coming from a city that has very high lead concentrations, aquasana gave me an additional discount on the entire unit, however, they do not give discounts for the water filters. This left me in a pickle, as the entire unit is cheaper for me to buy every 6 months than it would be to get my filters through their water to life program. It would be nice to add some coupons or incentives to be able to lower that cost. Because right now, I am going to just be ordering a whole unit every six months. Half of that will be unused. Odd marketing. Other than that, the product works great. The water is tasteless. I noticed that my nails grow better. My house plants grow better. I wish there was a way to make the flow a little bit faster, but that is minor. Please...filter coupons!!!!!
Date published: 2017-06-09
Rated 5 out of 5 by from The best filtered water I have ever tasted I purchased this product for our household use as we were looking for an alternative to our common countertop water filter pitcher. The availability of continuously cold filtered water has been a luxury to us. The water tastes so clean and refreshing that reaching my hydration goals has become even more rewarding. The installation could not have been more simple and interacting with customer service so far has been extremely satisfactory. Looking forward, the availability of hose length options would be useful to accommodate different kitchen configurations.
Date published: 2017-01-10
Rated 5 out of 5 by from silky smooth taste- Was expecting after taste--i live in a city close to chicago-and we receive our water from lake michigan--the water leaves such a bad after taste--but when i installed the new filter-i was pleasantly suprised at the smooth taste of the water-i have been a Fiji drinker for years-but have found a very worthy replacement in Aquasana--i just wish that they could devise a system that would increase the ph balance--but for now--im a true believer in Aquasana...
Date published: 2017-04-12
Rated 5 out of 5 by from The new on off pull switch is and exceptional improvement... The water filter itself is the main feature although the change to how the filter is turned on and off is an exceptional improvement. A slight pull and turn the water on, it works. Turn the water off and the filter disengages. The old version required you to turn a very small handle for both On and Off. The new on-off pull tab... Absolutely Exceptional. The filtration is, as always, a great feature too! Thank you for the improvement...!
Date published: 2017-04-13
Rated 5 out of 5 by from Excellent product! Saves time and money! This water filter is fantastic! We've been using our water filter everyday to fill large bottles of drinking water. It tastes great, and I can tell a huge difference between the filtered and non-filtered water by taste. It's convenient, portable, if needed, and hooks easily to the faucet for fuss-free use. We will be using our Aquasana for many years to come. The automatic replacement filter program will make our lives easier, as well!
Date published: 2017-06-10
Rated 5 out of 5 by from Water taste fresh and clean So happy I choose to invest in Aquasana countertop water filter. For at least the last ten years weekly I was purchased water from Water To Go store. Having developed back issues it was not wise for me to continue to carry in 10 gallons of water weekly to my home from my car. I am very pleased with the quality of this water filter. The only thing I would change is I would have this filter remove the fluoride, which is a toxin.
Date published: 2017-01-10
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Learn More

Aquasana FAQs

  1. Do I have to pay for a plumber to install the system?

    Our countertop drinking water filter system is very easy to install, and it only takes a few minutes to do; no plumber is necessary. If you have any questions or need assistance, our technical support representatives at 866-662-6885 can walk you through the installation process.

  2. How often do I have to replace the cartridges and how much do they cost?

    We recommend replacing the cartridges after six months or 450 gallons, whichever comes first. Replacement filters cost $59.99, but you can save 15%, get free shipping, and extend your product warranty by signing up for our no-contract auto-ship filter replacement program, Water for Life.

  3. Is this purified water?

    No, and actually, purified water is not as healthy as filtered water. Purified water undergoes reverse osmosis or distillation, which strip everything out of your water - not only the contaminants, but also the healthy, natural minerals. Our system uses selective filtration designed to reduce contaminants from the water and leave in the natural healthy minerals like calcium, potassium, and magnesium.

  4. How do I recycle the replacement filters?

    Our company will recycle the filters for you, but we do not cover the shipping cost to return the filters back to us. In reality, the environmental impact of shipping the filters back to us outweighs the good of recycling. To recycle the AQ-4035 drinking filters yourself, remove the ends of the filters, recycle the plastic parts (which are appropriately numbered) and put the carbon either in your compost pile or garden (carbon is good for plant life), or just throw it out (since the carbon degrades quickly, and is a positive component in a landfill).

  5. I'm a renter, so I can't drill or modify the plumbing. Which filter system should I get?

    The countertop system is perfect for renters because it does not require a new hole in the counter. To install an under counter system, you can remove the existing sprayer or soap dispenser in your rental and install our faucet in its place. This option will not damage or permanently modify your plumbing. When you move out, you can easily remove the system and reconnect your plumbing back to normal.

  6. What size adapters do you send with the countertop system (for the diverter hose)?

    13/16 and 15/16 male.

  7. What size is the chrome collar on the countertop system (on the diverter hose)?

    55/64-27 female.

  8. What does TDS mean?

    TDS is the acronym for Total Dissolved Solids, the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but are not an accurate measurement for contamination. Aquasana products reduce and remove harmful TDS like lead, but selectively retain or replace healthy dissolved solids like calcium, magnesium, and potassium.

  9. What is BPA? And why are people concerned about it?

    BPA stands for Bisphenol-A, a contaminant found in most plastics. BPA can adversely affect your health if consumed at high levels. Aquasana drinking systems do not contain BPA, and our filtration process reduces existing BPA.

  10. Does having hard water mean it is contaminated?

    Hard water is more of a nuisance than a health risk, and is not necessarily contaminated. Most water sources in the USA are considered hard. Hard water is generally safe to drink, after it has been properly treated.

  11. What is soft water, and is it safe to drink?

    Having soft water just means you have a lower concentration of dissolved minerals in the water (primarily calcium and magnesium). Soft water does not mean clean water. Your water can be soft and still contain contaminants.

  12. What is selective filtration, and how do Aquasana systems filter drinking water?

    Selective filtration is the process of sub-micron filtration, micron filtration, adsorption and ion exchange, all of which selectively reduces chemicals, heavy particulates and most dangerous heavy metals from the water while maintaining healthy minerals like calcium, magnesium and potassium.

  13. How do I know if an Aquasana system will be compatible with my faucet?

    The only faucets the AQ-4000 water filtration system will not be compatible with are the 2-in-1 faucets that have a detachable sprayer at the faucet opening. The AQ-4000 will fit most standard faucets and also comes with two adapters. If your faucet happens to be a non-standard size than the hose connection or adapters that come with unit, you can take your aerator to the plumbing section at your local hardware store and have it measured. After you know the size of your aerator, contact technical support with the size and we will see if we carry the right size adapter, and we will send it to you.

Learn More

User Q & A

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